Able starts off counting at 13, and counts by 7. What is the 11th number that Able will say?
13 + 7(11) = ?
To find the 11th number that Able will say, we need to determine the pattern in which Able is counting. Able starts off counting at 13 and counts by 7.
So, the pattern is:
13, 20, 27, 34, ...
We can see that each number is obtained by adding 7 to the previous number.
To find the 11th number, we can use the formula:
nth number = first number + (n - 1) * common difference
In this case, the first number is 13, the common difference is 7, and we want to find the 11th number.
Using the formula, we substitute the values:
11th number = 13 + (11 - 1) * 7
Simplifying the equation:
11th number = 13 + 10 * 7
11th number = 13 + 70
11th number = 83
Therefore, the 11th number that Able will say is 83.